/Engine/Source/Runtime/Engine/Public/DebugRenderSceneProxy.h
Method that should be called at render state creation (i.e. CreateRenderState_Concurrent). It will either callRegisterDebugDrawDelegate_ when deferring context is not provided or mark for deferred registration that should be flushed by callingProcessDeferredRegister_ on scene proxy creation.
void RequestRegisterDebugDrawDelegate ( [FRegisterComponentContext](API\Runtime\Engine\Components\FRegisterComponentContext) * Context )